Kubernetes部署redis主从集群

目标：

部署Redis leader节点

部署两个follower节点

一、部署 leader节点 redis-leader.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: redis-leader
  namespace: keya-env
  labels:
    app: redis
    role: leader
    tier: backend
spec:
  ports:
  - port: 6379
    targetPort: 6379
  selector:
    app: redis
    role: leader
    tier: backend
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis-leader
  namespace: keya-env
  labels:
    app: redis
    role: leader
    tier: backend
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
        role: leader
        tier: backend
    spec:
      containers:
      - name: leader
        image: "docker.io/redis:6.0.5"
        resources:
          requests:
            cpu: 100m
            memory: 500Mi
        ports:
        - containerPort: 6379

二、部署follower节点  redis-follower.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: redis-follower
  namespace: keya-env
  labels:
    app: redis
    role: follower
    tier: backend
spec:
  ports:
  - port: 6379
  selector:
    app: redis
    role: follower
    tier: backend

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis-follower
  namespace: keya-env
  labels:
    app: redis
    role: follower
    tier: backend
spec:
  replicas: 2
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
        role: follower
        tier: backend
    spec:
      containers:
      - name: follower
        image: gcr.io/google_samples/gb-redis-follower:v2
        resources:
          requests:
            cpu: 100m
            memory: 500Mi
        ports:
        - containerPort: 6379

查看集群信息：

[root@master redis-cluster]# kubectl exec -it redis-leader-dbc495489-h4n2l /bin/bash -n keya-env

#进入pod中访问redis

root@redis-leader-dbc495489-h4n2l:/data# redis-cli  #进入redis
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=192.168.104.54,port=6379,state=online,offset=1302,lag=0
slave1:ip=192.168.104.61,port=6379,state=online,offset=1302,lag=1
master_replid:a91918a13f0a6c70a6f594332b1d8d60b83c3a93
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:1302
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:1302